Cosmic origin.

How universe was created?

It is one of the greatest mystery in the history of space science .People who really care about these things are called cosmologists .

This question had been influenced by even religions in time ,which finally lead to the concept that god is the creator .But science step forwards other theories to explain it .One of it is steady state theory which says that the universe is constant (but this was proved wrong as the universe is expanding ) .Then came another theory,the big bang which was the product of the discovery that the universe was expanding . It came to origin from the conclusion that if the universe is expanding then it have originated from point in space time,it can be further explained as it was created from a curvature in space time or the whole fabric of space &time was curved.You can understand this well in the above video.
Now some  physicist are proposing another theory called the standard model & researches are going on under CERN on this theory(you may have heard about their famous laboratory in Geneva called the LHC)

Why is earth a geoid?

What is the shape of earth ?

Most people thinks that earth is spherical in shape ,but it is not .It have a geoid shape .

Our planet has this shape due to the centrifugal forces formed due to it's rotatory motion.The north & south poles are flat & it's equatorial region is projected outwards .

This shape is what that makes the equatorial regions warmer than poles.

Dark matter.

Dark matter

             The matter is defined as, any object which has mass & volume.Also matter attract each other due to the gravitational force which is the resultant of it's mass(as per the universal law of gravity ).

So,this means that the gravitational force of  a body is dependent/proportional/relative to the mass of the body.This is universal & there fore must be applicable to everything in this universe.

But this seem to be wrong in case of  some objects like a galactic cluster.The gravitational pull of the   object is much more than it need to be when ,this predicts that the excess mass is given by some unseen/hidden/invisible/dark matter which is not responding to any light rays(electromagnetic radiation) which makes it impossible to detect it directly.

Some even suggests the dark matter is the interaction of matter in another dimensions/parallel universes.

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Virtual water.

Virtual water

Water is one of the most important factor supporting life.But now we are polluting water sources,so that it is even predicted that the 3rd world war will be for fresh water.

Now the world has accepted the concept of virtual water.Virtual water is a concept that,if fresh water used(wasted) for making a product is more than the value of the product,then its loss of water for the nation.

Due to this,many car manufacturing companies are choosing poor/developing nations for establishing their factories,where there is no restriction/awareness of using(wasting)fresh water.

 Some nations are even resisting it's citizen from cultivating water fond crops such as cotton & rice because of its loss of virtual water.Also, in some countries the cost of imported crops are very high because they are buying virtual water along with the product.

Every drop counts.

Are we alone?

Are we alone in the universe ?

Its one of the most frequently asked question in the world and it's also impossible now to give an exact answer .
Most people believes that extraterrestrials do exist,but there is no proof that they exist or not.Also scientifically ,there is a large possibility for their existence .An argument is that there are millions of galaxies in the universe & each galaxy has over a billion stars & stars have celestial bodies revolving around it.As there is a lot of objects like this,the probability of the existence of intelligent life  forms also increases. SETI(Search for extraterrestrial intelligence ) is an organization researching in this field .

For further information visit www.seti.org

YOU CAN ALSO BE A PART OF THIS SEARCH BY DONATING SOME SPACE FROM YOUR SYSTEM'S HARDISK TO SETI@HOME.OR YOU CAN HELP ASTONOMERS ANALYSE DATA FROM SPACE ON ZOONIVERSE

 

E=mc2

E=mc2   

It is the world famous equation of Albert Einstein .

Here E is energy , m is mass and c is the velocity of light .
This equation is a proof that energy and matter are two sides of the same coin.
This equation gave man ,access to the tremendous energy of matter.

This equation also suggests that nothing can overtake the velocity of light.

But  E=mc^2 is not complete.It only expresses the mass of a particle at rest.The real equation is that,

E = (mc^2)+(pc)^2 ;where p is the momentum of the object.When the particle is at rest we will get the equation E=mc^2.

Also the proof of the equation is in the above video.

What if we made a tunnel through the globe???[̲̅♥̲̲̅̅c̲̲̅̅r̲̲̅̅a̲̲̅̅z̲̲̅̅y̲̲̅̅♥̲̅]

It's almost practically impossible stuff,but our minds are free to explore them all.

oh!! you superman..

that doesn't feel impossible!!!

Imagine if you've made the crazy tunnel(gravity train) we were talking(i meant 'communicating'') about and you leaped into it.what would you think will happen :will you explode,reach extreme speeds ,will you be kidnapped by some crazy aliens;Let's explore.                                                                                   

First of all,,as you jump you will keep accelerating at 9.80665 m/sec^2(g).later as you go deeper your velocity as well as your  rate of acceleration with respect to time (jerk) as given by the equation ;(where  is the mass of the larger body, and  is a unit vector directed from the large mass to the smaller mass. The negative sign indicates that the force is an attractive force)

As you  reaches the centre of the earth the velocity will be maximum and the velocity goes on decreasing and the gravitational acceleration goes on increasing and the same thing all around .The process will continue infinite times when not considering the loss of energy of any forms.Just like a perfect spring system.